topic Re: pvcreate help in Operating System - HP-UX

pvcreate help

Chris Fadrowski — Wed, 21 May 2003 14:26:07 GMT

I am planning on recovering a system at a hot site. they have smaller luns than i have here on setup. i would like to know if there is a way to PVCREATE all 55 devices at one time with a wildcard command. i just don't know the proper command. I want to avoid doing a pvcreate -f /dev/rdsk/cxtxdx individually for each disk.

Re: pvcreate help

Ross Zubritski — Wed, 21 May 2003 14:28:45 GMT

Make yourself a quick for loop as follows:

/dev/dsk/c#t#d#
/dev/dsk/c#t#d#

Put all the disks in a file called x in this example and execute the following

for i in `cat x`
do
pvcreate -f $i
done

enjoy.

RZ

Re: pvcreate help

James R. Ferguson — Wed, 21 May 2003 14:31:10 GMT

Hi Chris:

How about:

# for DISK in `ls /dev/rdsk`
> do
> pvcreate -f /dev/rdsk/${DISK}
> done

Regards!

...JRF...

Re: pvcreate help

James R. Ferguson — Wed, 21 May 2003 14:31:58 GMT

Hi Chris:

How about:

# for DISK in `ls /dev/rdsk`
> do
> pvcreate -f /dev/rdsk/${DISK}
> done

Regards!

...JRF...

Re: pvcreate help

Ross Zubritski — Wed, 21 May 2003 14:34:25 GMT

Dang JRF, always a step ahead.... ;)

RZ

Re: pvcreate help

Chris Fadrowski — Wed, 21 May 2003 14:36:16 GMT

but will this trash my disks on vg00 that were created after the make_tape_recovery is complete? I will be doing this most likely after vg00 has been make_recovered.

Re: pvcreate help

Chris Fadrowski — Wed, 21 May 2003 14:36:34 GMT

but will this trash my disks on vg00 that were created after the make_tape_recovery is complete? I will be doing this most likely after vg00 has been make_recovered.

Re: pvcreate help

Ian Dennison_1 — Wed, 21 May 2003 14:38:02 GMT

How about,

for i in $(cat /tmp/diskfile)
do
export j=`echo $i |sed 's/rdsk/dsk/g'`
export LNCOUNT=`strings /etc/lvmtab |grep $j |wc -l`
if (( $LNCOUNT < 1 ))
then
pvcreate -f $i
fi
done

This way, you do not trash your boot disk or any other existing disk (Just a thought)

NOTE: Will not work on system that can view disks from other systems (SAN, FC10, etc)

Share and Enjoy! Ian

Re: pvcreate help

Ian Dennison_1 — Wed, 21 May 2003 14:38:53 GMT

First line of loop should be

for i in $(ls /dev/rdsk)

Sorry, rehashed the thing halfway through. Ian

Re: pvcreate help

Ian Dennison_1 — Wed, 21 May 2003 14:38:59 GMT

First line of loop should be

for i in $(ls /dev/rdsk)

Sorry, rehashed the thing halfway through. Ian

Re: pvcreate help

James R. Ferguson — Wed, 21 May 2003 14:39:10 GMT

Hi (again) Chris:

Ooops, you want to exclude your boot disk! Therefore, once you know its disk (e.g. c0t6d0) do:

#!/usr/bin/sh
for DISK in `ls dev/rdsk`
do
[ "${DISK}" != c0t6d0 ] && pvcreate -f /dev/rdsk/${DISK}
done

Regards!

...JRF...

Re: pvcreate help

James R. Ferguson — Wed, 21 May 2003 14:39:21 GMT

Re: pvcreate help

Ross Zubritski — Wed, 21 May 2003 14:39:35 GMT

Just exclude your root disk from your config file.

Regards.

RZ

Re: pvcreate help

Ross Zubritski — Wed, 21 May 2003 14:41:40 GMT

Just a side note, pvcreate -f will not trash a disk with boot info on it. Confirmed with HP.

Regards,

RZ

Re: pvcreate help

Chris Fadrowski — Wed, 21 May 2003 14:45:33 GMT

[ "${DISK}" != c0t6d0 ] && pvcreate -f /dev/rdsk/${DISK}

not good at scripting but does this statement mean, "do NOT include disk c0t6d0" ???? Just need to verify.

All these disks will be on an EMC Sym with only one internal used for vg00.

Re: pvcreate help

S.K. Chan — Wed, 21 May 2003 14:46:39 GMT

Do a multiple loop .. for example say you want to pvcreate c[1-3]t[0-4]d[0-2] you can run ..
# for i in 1 2 3
> do
> for j in 0 1 2 3 4
> do
> for k in 0 1 2
> do
> pvcreate -f /dev/rdsk/c${i}t${j}d${k}
> done
> done
> done
Any devices not found in the range will just come back with any error "couldn;t open physical volume", no harm done.
Just any idea ..

Re: pvcreate help

Ross Zubritski — Wed, 21 May 2003 14:47:49 GMT

!= will exclude that string.

Re: pvcreate help

James R. Ferguson — Wed, 21 May 2003 14:48:18 GMT

Hi (again) Chris:

[ "${DISK}" != c0t6d0 ] && ppvcreate -f "/dev/rdsk/${DISK}"

...is shorthand for test the variable ${DISK} to be not equal c0t6d0. If that is true then execute the next statement, which in this case is 'pvcreate'.

See the man pages for 'test' for more information.

Regards!

...JRF...

Re: pvcreate help

Chris Fadrowski — Wed, 21 May 2003 15:06:12 GMT

thanks for all the great answers. I tested JRF's answer and it worked well.

I am trying to assign points but the ITRC isn't working real well for me today. I will keep trying the rest of the day to get the points out to you guys. thanks again.

Re: pvcreate help

John Meissner — Wed, 21 May 2003 15:44:49 GMT

inq -f_emc | grep ^/dev | awk '{print $1}' > emc.out
cat emc.out | awk '{print "pvcreate -f " $1}' > pvemc.sh
chmod +x pvemc.sh
./pvemc.sh